X-in V-ang
(Published on 9. November 2025, 15:25 by NurglesGift)
Normal sudoku rules apply.
Shade cells to create two separate, orthogonally connected regions, one for the shaded cells and one for the unshaded cells. no 2x2 block of cells can be entirely shaded/unshaded. Additionally, split every line into one shaded/unshaded section that differ by maximum 1 cell.
Shaded cell value is the digit (-1) i.e. A shaded 1's value is 0. (unshaded cells are normal value)
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Cells connected by a white dot must have consecutive value.
Cells connected by an X, value must sum to 10.
Cells connected by an V, value must sum to 5.
All X's and V's are given.
Two lines of the same length and same color are connected X lines.
Counting from the bulb, the first cell of each connected X lines value sum to 10. the second cell of each lines value sum to 10 etc.
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Feel free to recommend this puzzle to anyone.
Feel free to take special rules for your own puzzle.
Feel free to give feedback.
Bless you!
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Solution code: give the digits of column 7 (top to bottom)
Comments
on 13. November 2025, 22:45 by mezeji
great logic acrobatics
on 12. November 2025, 16:16 by NurglesGift
the 4-cell length lines need to be from one end 2 shaded cells and from the other end 2 unshaded cells, the 3-cell length lines need to be from one end 1-2 shaded cells and from the other end 1-2 unshaded cell, the 2-cell length lines is 1 of each..
on 11. November 2025, 22:23 by rainingfish
“Additionally, split every line into one shaded/unshaded section that differ by maximum 1 cell.“ Could you explain this rule a bit more to me please. I’m a little confused on whether it means each line must be entirely shaded or unshaded (with one cell on a line allowed to be different), or if each line must be half shaded and half unshaded?
on 10. November 2025, 09:34 by Snookerfan
Lovely, thanks!
on 9. November 2025, 19:25 by NurglesGift
Fair enough, I even had to add the right white dot just to disambiguate the shading in the end.
If I do another one I will make sure you will struggle until the end heh.
on 9. November 2025, 19:10 by Marshal on Mars
Tough but fair "middle"* and a very enjoyable puzzle overall. The twist on the connected x-lines makes you think quite differently about them.
*It looks like the 'middle' of the puzzle until you cross that point, upon which the rest of it rapidly falls into place, so in a way the middle is the end.
The one bit that felt weird is that doing any new shading just about stops mattering at that "middle" point (for the purposes of the unique solution of digit placements) because the Sudoku rules and what is already colored by then are enough to solve.
